MicrosoftEdge / MicrosoftEdge/WebView2Feedback
Invalid Window Handle error from CreateCoreWebView2Controller
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Description
I am trying to create a WebView2 in C++ in a process running on an IIS server. The WebView2 is to be used for rendering dashboards as bitmaps for publishing.
When I call CreateCoreWebView2Controller, I get error 0x80070578 (ERROR_INVALID_WINDOW_HANDLER) returned in the ICoreWebView2CreateCoreWebView2ControllerCompletedHandler. I have tried passing both the handle of the host window that I have created and also HWND_MESSAGE as the parent.
This functionality works fine when the code is called from within an MFC C++ Windows Desktop application. The error only occurs when called from ASP.NET C# via a Managed C++ interface.
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